sm5309a Nippon Precision Circuits Inc, (NPC), sm5309a Datasheet

sm5309a

Manufacturer Part Number

sm5309a

Description

3-channel Video Buffer With Built-in Wideband Lpf

Manufacturer

Nippon Precision Circuits Inc, (NPC)

Datasheet

1.SM5309A.pdf (24 pages)

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Download datasheet (514Kb)

OVERVIEW

The SM5309A is a 3-channel video buffer with built-in 5th-order lowpass ﬁlters. The lowpass ﬁlter cutoff fre-

quency range can adjust from 4MHz to 40MHz

mat, video signal equipment analog input/outputs. For video input systems, the device functions as a next-stage

ADC system anti-aliasing ﬁlter. For video output systems, the ﬁlter reduces video DAC aliasing and external

noise and can drive up to 300 Ω load resistance. The cutoff frequency and signal input type can be controlled

using an I

on the same bus.

*1. When the resistor connected to ISET (R

*2. I

FEATURES

APPLICATIONS

ORDERING INFORMATION

Supply voltages

• Analog: 4.75 to 5.25V

• I

Lowpass ﬁlter with adjustable cutoff frequency

(256 steps)

• Cutoff frequency range: 4MHz to 40MHz

Filter bypass mode function for display speciﬁca-

tions up to SXGA resolution

• Passband: 80MHz (typ)

Half fc mode switch function (CH-2, CH-3) suit-

able for component signals

2-system input multiplexer function

(switchable using I

Video input pins can be independently set to sync-

tip clamp/bias/direct inputs

Up to 300 Ω load resistance drive capability

Output gain: 0dB

Power-down function

• ≤ 1mA current consumption when power-down

• Slave address: 90h, 92h, or 94h

• Data transfer rate: Fast mode (up to 400kbit/s)

Operating ambient temperature range: 0 to 70 ° C

Package: 24-pin VSOP

HDTVs

LCD TVs

PDPs

Projectors

C-BUS is a registered trademark of NXP B.V.

C-BUS interface control

(up to three devices can be used simultaneously,

selected by ADS input)

C-BUS interface: 3.0 to 5.5V

SM5309AV

Device

C-BUS

, and the I

C-BUS or MUXSEL input)

C slave address can be set by ADS (3-state input) to allow up to three SM5309A

ISET

) is 1.8k Ω .

24-pin VSOP

Package

= 1.8k Ω )

3-channel Video Buffer with Built-in wideband LPF

by 256 steps. The lowpass ﬁlter supports 480i to 1080i for-

PINOUT

(Top view)

PACKAGE DIMENSIONS

(Unit: mm)

0.65

7.9 ± 0.2

MUXSEL

IN1A

IN1B

GND

ISET

IN2A

IN2B

IN3A

IN3B

VCC

SCL

0.22 − 0.05

+ 0.1

0.10

SEIKO NPC CORPORATION —1

0.12

ADS

REF1

REF2

VCC

OUT1

GND

OUT2

VCC

OUT3

GND

VDD

SDA

SM5309A

0 to 10

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